package oop2;

public class Test01 {
    public static void main(String[] args) {
        int a = 5;
        Integer b = a;
        int c = b;
//        char c1 = '';
    }
}


interface  A{
    void f1();
}

interface  B{
    void f2();
}
interface C extends A,B{
    void f3();
}
abstract class E{
    abstract void f4();

    void f5(){
        System.out.println("f5");
    }
}

class D extends E implements  C{

    @Override
    public void f1() {

    }

    @Override
    public void f2() {

    }

    @Override
    public void f3() {

    }

    @Override
    void f4() {

    }
}








